KAPLAN OFFICIAL EXPLANATION (E) Main PointIn a Main Point question, you may not get a clear conclusion keyword, but you will get other keywords that can help you determine what isn’t the conclusion. As always, keywords are going to guide us as we make our way through this argument. The first part of the argument begins with “although it is unwise,” signaling that the author is making a concession: it’s not a good idea to think of music in terms of developmental advances. But although this is unwise, the author says, it does make good sense to speak of musical knowledge expanding over time. Everything the author says about our increasing knowledge of certain sounds is used as specific information to support this idea. (Did you notice “for example” at the beginning of the last sentence?) Therefore, that idea—that our musical knowledge can increase over time—is the author’s main point.
(E) is a direct paraphrase of that idea.
(A) is given as an example of our expanding musical knowledge, so for that reason, it is not the main point of the argument.
(B) is found in the last sentence of the argument, which begins with “for example.” Those two words will never signal the conclusion of an argument.
(C) and (D) are in the first sentence as points that the author concedes on the way to the main point. The evidence in the argument is not given in support of
(C) or (D), so they can’t be the conclusion.